Help to choose the 1st 3D printer - Tronxy X5SA Pro or Creality CR-10 V2

[curious aardvark]

Interesting.

Now as a person who owns all three systems: 2 deltas, 2 cartesian replicator clone dual extruders and a prusa style i3, there are some practical things you have wrong and a few you have not considered.

With a standard dual extruder system - replicator clones are the most common.
Yes they are slow, yes getting nozzles level can be a pita. But I have never had any issues with filament dripping.
Given that they are usually direct drive extruders, retractions work really well and quickly.
The biggest argument against a side by side dual extruder setup is the length of time and the extra material used by the purge walls.

As far as I3's and speed goes. They are actually the FASTEST of all three basic models.
On a proper i3 (NOT the creality abominations) the bed is supported on two side rails with smooth linear guides. So there is no vibrations, and because the extruder is also moving and the overall speed is a combination of the two - even at 300mm/s there is no obvious issues.
And that's as fast as simplify3d would let me print.

Deltas, deltas are great. They are also the most compact in terms of frame size for their print volume.
Height does NOT take up any desk space. and in fact my mini delta actually sits on top of my larger delta :-)
Maximising desk space in a way it's difficult to do with any other style of machine.
There are also less things to go wrong on a delta.
And if you use an extended flexible drive shaft, you can also fit one with a proper, very light weight, direct drive extruder.

My delta is currently my main workhorse. I have hopes for my cheaper than chips ctc (full prusa mechanics: side rails, direct drive, dual z-motors) if, I ever get a working combination of screen, board and firmware.
Tests proved it's significantly faster than the delta.
Why people insist on running I3's at such low speeds, is beyond me.
Like there's some weird kind of badge in spending three days printing something that should have taken a few hours.

Now one thing you have neglected is the best of all combinations - the IDEX printer.
Independant Dual Extruders.
These can be fitted to a corexy/cartesian style OR to an I3 setup.
Alas while I can envisage a possible way to fit a delta with two heads (not dual/multiple nozzles - seen that) I have no idea how you would create the relevant firmware and slicer.

Of the two machines you've decided on The tronxy is probably the best.
I just don't like what creality did to i3's and have no clue as to why they did it. Their design took a great and stable system and deliberately crippled and slowed it down. While saving about $10 a machine.
Illogical.

The latest x5sa pro seems to be a well made machine, couple of people round here who bought them have been impressed.